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* configure: Bump minimum-required sphinx versionwip/fix-eventlog-docsBen Gamari2020-01-241-2/+3
| | | | Due to #17740 we now require sphinx 2.3.1.
* users-guide: Fix undefined referencesBen Gamari2020-01-242-17/+33
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* testsuite: Don't crash on encoding failure in printBen Gamari2020-01-241-2/+6
| | | | | | If the user doesn't use a Unicode locale then the testsuite driver would previously throw framework failures due to encoding failures. We now rather use the `replace` error-handling strategy.
* configure: Fix sphinx version testBen Gamari2020-01-241-1/+1
| | | | The check for the "v" prefix is redundant.
* base: Always clamp reads/writes to 2GB in lengthBen Gamari2020-01-241-9/+6
| | | | | | | | | | | | Previously we did this only on Darwin due to #17414. However, even on other platforms >2GB writes are on shaky ground. POSIX explicitly says that the result is implementation-specified and Linux will write at most 0x7ffff000, even on 64-bit platforms. Moreover, getting the sign of the syscall result correct is tricky, as demonstrated by the fact that T17414 currently fails on FreeBSD. For simplicity we now just uniformly clamp to 0x7ffff000 on all platforms.
* Pass -Wno-unused-command-line-arguments during link on FreeBSDBen Gamari2020-01-241-1/+3
| | | | | FreeBSD cc throws a warning if we pass -pthread without actually using any pthread symbols.
* testsuite/T16930: Don't rely on gnu grep specific --includeBen Gamari2020-01-242-12/+12
| | | | In BSD grep this flag only affects directory recursion.
* testsuite: Mark T6132 as broken on FreeBSDBen Gamari2020-01-241-1/+3
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* testsuite: Disable tests that assume name of libstdc++ on FreeBSDBen Gamari2020-01-242-3/+16
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* testsuite: Don't ask sed to operate in-place on symlinksBen Gamari2020-01-241-0/+4
| | | | | Some sed implementations (e.g. FreeBSD) refuse to operate in-place on symlinks.
* rts/M32Alloc: Don't attempt to unmap non-existent pagesBen Gamari2020-01-241-1/+3
| | | | | | The m32 allocator's `pages` list may contain NULLs in the case that the page was flushed. Some `munmap` implementations (e.g. FreeBSD's) don't like it if we pass them NULL. Don't do that.
* integer-gmp: Fix unused command-line argumentBen Gamari2020-01-241-1/+1
| | | | -L is only needed during linking.
* rts: Use nanosleep instead of usleepBen Gamari2020-01-241-2/+15
| | | | usleep was removed in POSIX.1-2008.
* gitlab-ci: Move Windows CI logic to bash scriptBen Gamari2020-01-245-341/+564
| | | | | | This moves all of the Windows CI logic to .gitlab/win32-ci.sh. This makes it easier to ensure that all CI steps are executed from within a properly initialized mingw session.
* Rework handling of win32 toolchain tarballsBen Gamari2020-01-246-336/+64
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* make: Be more selective in building windows-extra-src tarballBen Gamari2020-01-241-1/+1
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* testsuite: Widen acceptance window of T1969Ben Gamari2020-01-241-1/+3
| | | | | I have seen >20% fluctuations in this number, leading to spurious failures.
* Avoid ./configure failure on NetBSDPHO2020-01-201-1/+4
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* unregisterised: Fix declaration for stg_NO_FINALIZERBen Gamari2020-01-201-1/+1
| | | | | | | Previously it had a redundant _entry suffix. We never noticed this previously presumably because we never generated references to it (however hard to believe this may be). However, it did start failing in !1304.
* Add missing Note [Improvement from Ground Wanteds]Ben Gamari2020-01-201-0/+13
| | | | Closes #17659.
* Put the docs for :instances in alphabetical positionXavier Denis2020-01-201-33/+33
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* gitlab-ci: Allow submodule cleaning to fail on WindowsBen Gamari2020-01-201-3/+7
| | | | | | | | | | | Currently CI is inexplicably failing with ``` $ git submodule foreach git clean -xdf fatal: not a git repository: libffi-tarballs/../.git/modules/libffi-tarballs ``` I have no idea how this working tree got into such a state but we do need to fail more gracefully when it happens. Consequently, we allow the cleaning step to fail.
* gitlab-ci: Reenable submodule linterBen Gamari2020-01-201-2/+1
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* Remove deprecated -smp flagÖmer Sinan Ağacan2020-01-201-2/+0
| | | | It was deprecated in 2012 with 46258b40
* testsuite: Preserve more information in framework failuresBen Gamari2020-01-201-1/+1
| | | | | Namely print the entire exception in hopes that this will help track down #17649.
* llvmGen: Fix #14251Ben Gamari2020-01-203-25/+116
| | | | | | | | | | | | | | Fixes the calling convention for functions passing raw SSE-register values by adding padding as needed to get the values in the right registers. This problem cropped up when some args were unused an dropped from the live list. This folds together 2e23e1c7de01c92b038e55ce53d11bf9db993dd4 and 73273be476a8cc6c13368660b042b3b0614fd928 previously from @kavon. Metric Increase: T12707 ManyConstructors
* llvmGen: Add lower-expect to the -O0 optimisation setBen Gamari2020-01-201-1/+1
| | | | @kavon says that this will improve block layout for stack checks.
* llvmGen: Fix typo in readnone attributeBen Gamari2020-01-201-1/+1
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* llvmGen: Don't trash STG registersBen Gamari2020-01-201-38/+2
| | | | Fixes #13904.
* Document Stg.FVs moduleÖmer Sinan Ağacan2020-01-201-1/+39
| | | | | | Fixes #17662 [ci skip]
* Fix +RTS -Z flag documentationÖmer Sinan Ağacan2020-01-202-2/+2
| | | | | | | | | Stack squeezing is done on context switch, not on GC or stack overflow. Fix the documentation. Fixes #17685 [ci skip]
* gitlab-ci: Don't FORCE_SYMLINKS on WindowsBen Gamari2020-01-171-1/+1
| | | Not all runners have symlink permissions enabled.
* Revert "`exprOkForSpeculation` for Note [IO hack in the demand analyser]"Sebastian Graf2020-01-161-11/+11
| | | | | | | | | | | | | This reverts commit ce64b397777408731c6dd3f5c55ea8415f9f565b on the grounds of the regression it would introduce in a couple of packages. Fixes #17653. Also undoes a slight metric increase in #13701 introduced by that commit that we didn't see prior to !1983. Metric Decrease: T13701
* replace dead html link (fixes #17661)Adam Wespiser2020-01-161-1/+1
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* Remove special case case of bool during STG -> C--John Ericson2020-01-162-86/+1
| | | | | | | | | Allow removing the no longer needed cgPrimOp, getting rid of a small a small layer violation too. Change which made the special case no longer needed was #6135 / 6579a6c73082387f82b994305011f011d9d8382b, which dates back to 2013, making me feel better.
* Get rid of OpDestJohn Ericson2020-01-161-598/+583
| | | | | `OpDest` was basically a defunctionalization. Just turn the code that cased on it into those functions, and call them directly.
* Handle TagToEnum in the same big case as the other primopsJohn Ericson2020-01-163-35/+94
| | | | | | | | | | | | | Before, it was a panic because it was handled above. But there must have been an error in my reasoning (another caller?) because #17442 reported the panic was hit. But, rather than figuring out what happened, I can just make it impossible by construction. By adding just a bit more bureaucracy in the return types, I can handle TagToEnum in the same case as all the others, so the big case is is now total, and the panic is removed. Fixes #17442
* Better documentation for mkEtaWW [skip ci]Sebastian Graf2020-01-161-11/+24
| | | | | | So that hopefully I understand it faster next time. Also got rid of the confusing `orig_expr`, which makes the call site in `etaExpand` look out of sync with the passed `n` (which is not the original `n`).
* Comments in TcHsTypeSimon Peyton Jones2020-01-121-2/+2
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* Minor refactor around quantified constraintsSimon Peyton Jones2020-01-122-13/+41
| | | | | | | | | | This patch clarifies a dark corner of quantified constraints. * See Note [Yukky eq_sel for a HoleDest] in TcSMonad * Minor refactor, breaking out new function TcInteract.doTopReactEqPred
* Comments about constraint floatingSimon Peyton Jones2020-01-121-0/+5
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* Add comments about TH levelsSimon Peyton Jones2020-01-123-6/+12
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* users-guide/debug-info: typo “behivior”Jean-Baptiste Mazon2020-01-121-1/+1
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* Fix LANG=C for readelf invocation in T14999Sylvain Henry2020-01-121-1/+1
| | | | The test fails when used with LANG=fr_FR.UTF-8
* gitlab-ci: Retain bindists used by head.hackage for longerBen Gamari2020-01-121-1/+3
| | | | | Previously we would keep them for two weeks. However, on the stable branches two weeks can easily elapse with no pushes.
* Fix more typos, via an improved Levenshtein-style correctorBrian Wignall2020-01-12136-360/+360
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* Don't zap to Any; error insteadRichard Eisenberg2020-01-1233-124/+298
| | | | | | | | | This changes GHC's treatment of so-called Naughty Quantification Candidates to issue errors, instead of zapping to Any. Close #16775. No new test cases, because existing ones cover this well.
* Overloaded Quotation Brackets (#246)Matthew Pickering2020-01-1268-1053/+1696
| | | | | | | | | | | | | | | | | | This patch implements overloaded quotation brackets which generalise the desugaring of all quotation forms in terms of a new minimal interface. The main change is that a quotation, for example, [e| 5 |], will now have type `Quote m => m Exp` rather than `Q Exp`. The `Quote` typeclass contains a single method for generating new names which is used when desugaring binding structures. The return type of functions from the `Lift` type class, `lift` and `liftTyped` have been restricted to `forall m . Quote m => m Exp` rather than returning a result in a Q monad. More details about the feature can be read in the GHC proposal. https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0246-overloaded-bracket.rst
* improve docs for HeaderInfo.getImportsAdam Sandberg Eriksson2020-01-121-1/+2
| | | | [skip ci]
* Print Core type applications with no whitespace after @ (#17643)Ryan Scott2020-01-0836-195/+160
| | | | | | | | | | | This brings the pretty-printer for Core in line with how visible type applications are normally printed: namely, with no whitespace after the `@` character (i.e., `f @a` instead of `f @ a`). While I'm in town, I also give the same treatment to type abstractions (i.e., `\(@a)` instead of `\(@ a)`) and coercion applications (i.e., `f @~x` instead of `f @~ x`). Fixes #17643.
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